Graph implement

ABSTRACT

In a graph implement, a multi-sided tubular body having an enlarged multi-sided tapered head terminating in a frustrum of a cone on the longitudinal centers thereof; a removable transparent casing or sleeve surrounding said body and spaced from the sides of the multi-sided tubular body to hold inserts bearing useful reference tables in the space between the tubular body and the transparent casing; a removable, multi-sided cap detachably held on the end of said tubular body to hold said transparent casing and said inserts in position; an aperture through the longitudinal center of the cap registering with the cavity of said tubular body for insertion and releasable retention of a ballpoint pen or pencil writing implement so that the writing end of said implement emerges through the tip of the enlarged tapered head; the multi-sided tapered head, the multi-sided transparent casing, and the multi-sided securing cap having the same sides in registry so that the corners thereof may be utilized as rulers for drawing when the graph implement is removed for that purpose.

United States Patent [1'91 Gaidos et al.

[ Oct. 9,1;973

[ GRAPH IMPLEMENT [76] Inventors: Alonzo F. Gaidos; Angela G. Gaidos,both of 110 Oak Rim Ct., Apt. 11, Los Gatos, Calif. 95030 [22] Filed:Nov. 15, 1972 [21] Appl. No.: 306,518

Primary ExaminerRichard B. Wilkinson Assistant Examiner-Pat SalceAttorney-George B. White [57] ABSTRACT In a graph implement, amulti-sided tubular body having an enlarged multi-sided tapered headterminating in a frustrum of a cone on the longitudinal centers thereof;a removable transparent casing or sleeve surrounding said body andspaced from the sides of the multi-sided tubular body to hold insertsbearing useful reference tables in the space between the tubular bodyand the transparent casing; a removable, multi-sided cap detachably heldon the end of said tubular body to hold said transparent casing and saidinserts in position; an aperture through the longitudinal center of thecap registering with the cavity of said tubular body for insertion andreleasable retention of a ballpoint pen or pencil writing implement sothat the writing end of said implement emerges through the tip of theenlarged tapered head; the multi-sided tapered head, the multi-sidedtransparent casing, and the multi-sided securing cap having the samesides in registry so that the corners thereof may be utilized as rulersfor drawing when the graph implement is removed for that purpose.

7 Claims, 22 Drawing Figures Patented Oct. 9, 1973 3,764,064

2 Sheets-Sheet 1 Patented ()cl. 9, 1973 3,764,064

2 Sheets-Sheet GRAPH IMPLEMENT BACKGROUND OF THE INVENTION A multi-sidedimplement which contained a withdrawable pencil so that the corners ofthe implement could be utilized for drawing or ruling lines, was shownin U.S. Pat. No. 1,677,387 granted to Alonzo F. Gaidos on July 17, I928.

The primary object of this invention is to provide an improved graphimplement which has greater versatility and usefulness, and which iscapable of supporting a calculating implement of the slide-rule typethereon, and which could be utilized for carrying useful information onflat strips held under a transparent casing.

Another object of the invention is to provide a tubular body in which aremovable writing implement can be held and which body can be used as awriting implement, but which body includes separable parts, namely ahead with a tapered writing end through which the writing implementextends, a transparent casing extended from said head, and a detachablehead to hold the transparent casing in position, the three elementsbeing multi-sided, the corners thereof being in registry to formcontiguous straight edges for drawing or ruling lines, and whereinstrips bearing useful information can be carried in the space within thetransparent casing.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal exterior viewshowing two sides of the graph implement having a housing of triangularcross section having independent scales of differing types as viewedthrough the transparent sleeve-like casing.

FIG. 2 is a longitudinal view showing the flat side of the implementhaving an independent graduated scale viewed through the transparentsleeve-like casing.

FIG. 3 is a longitudnal exterior view of another side of the implementhaving a slide-rule type calculating device viewed through thetransparent sleeve-like casing with a cursor element slideably mountedon the casmg.

FIG. 4 is an enlarged fragmental longitudinal sectional view, thesection being taken on lines 44 of FIG. 3.

FIG. 5 is a cross-sectional view on lines 5-5 of FIG. 4.

FIG. 6 is a cross-sectional view on lines 6--6 of FIG. 2.

FIG. 7 is an end view in the direction of arrows 77 of FIG. 4.

FIG. 8 is a fragmental detail view of the multi-sided tubular bodyshowing the spring-like latch formed integrally-with one side of thetubular body.

FIG. 9 is an enlarged end view in the direction of arrows 9-9 of FIG. 8.FIG. 10 is a side view of the transparent sleeve-like casing. FIG. 11 isan enlarged end view in the direction of arrows ll of FIG. 10.

FIG. 12 is a view showing one form of a strip insert withtrigonometrical formulae thereon.

FIG. 13 is a cross-section through a simplified form taken through lines13-13 of FIG. 14 excluding the removable writing implement.

FIG. 14 is a longitudinal partial cross-section of the simplified formtaken through lines l4l4 of FIG. 13 excluding the removable writingimplement.

FIG. 15 is a cross-sectional view on lines 15-15 of FIG. 14 showing aspring-like latch on the end of the multi-sided tubular body seated inlatching aperture in the side of the cap. v

FIG. 16 is a cross-sectional view taken on lines I6-l6 of FIG. 14.

FIG. 17 is a fragmental detail view of a multi-sided tubular body of thesimplified form showing the anchoring serrations at one end and thespring-like latch at the other end.

FIG. 18 is an end view of the simplified form of the multi-sided tubularbody shown in FIG. 17.

FIG. 19 is a fragmental partly sectional detail view of the removablewriting implement insertable for use in either the preferred orsimplified forms.

FIG. 20 is a perspective view illustrating use of the graph implementfor writing or free-hand lettering.

FIG. 21 is a perspective view illustrating use of the graph implementand the withdrawn writing implement for drawing.

FIG. 22 is a perspective view illustrating the graph implement utilizedfor determining dimensions ofa machine component.

DETAILED DESCRIPTION As shown particularly by FIGS. 4 and 5, a tubularbody I has a frusto-conical head 2 at one end thereof and a detachablecap 3 at its other end. The sides 4 of the head 2 and also the cap 3 areof triangular crosssection of equal width and greater than the sides ofthe body 1, which latter is also of triangular cross-section. Atransparent sleeve 6 is held between the head 2 and the cap 3. Thesleeve 6 is also of triangular crosssection. The head 2 has an aligningshoulder 7 for receiving the flat sides of the triangular sleeve 6 andthereby registering the same with the sides of the head 2. The tubularbody 1 has a spring finger 8 on its end insertable in a pocket 9 of thecap 3. On the end of the spring finger 8 is a catch 1 l as shown inFIGS. 6, 8 and 9, engageable with a latching aperture 12 on the middleof the side of the cap 3 so as to detachably hold the cap 3 with thethree sides thereof in registry with the three sides of the sleeve 6.

The passage through the tubular body extends through the head 2 andterminates in a tapered and reduced portion to accommodate the tip of awriting in strument such as a ballpoint pen 13 in writing position withthe tip 14 thereof projecting beyond the frustoconical tip of the head2. The cap 3 has a threaded hole 16 therethrough and the writingimplement 3 has a threaded neck 17 which can be screwed into thethreaded hole 16 thereby to hold the writing implement in writingposition. A knurled head 18 on the end of the writing implement isprovided for facilitating the screwing and unscrewing of the writingimplement into the cap 3.

The sides 4 of the head 2 and the cap 3 are substantially greater inwidth than the flat sides of the body 1, so as to provide spaces 19between the respective sides of the body 1 and the triangular sleeve 6.In each space 19 are held suitable strip inserts 21. These strip insertsmay be sheared from thin acrilac sheets or the like and are providedwith suitable reference matters thereon, for instance, with graduatedscales at their edges or useful reference tables such as matricconversion tables or with mathematical or trigonometrical formulae,according to the requirements of the user. The strips are inserted byremoving the cap 3 which leaves the respective spaces or compartments 19open at that end permitting the endwise insertion of the desired stripinserts. As illustrated in FIGS. 3 and 4, the strip insert 21 thereinmay be made in the form of a slide-rule with the middle insert portion22 being slideable. For this purpose the head 2 and the cap 3 havegrooves 23 aligned so as to permit the sliding of the middle strip 22.The overlying sides of the sleeve 6 have semi-circular cut away portions24 at each end to permit access to the middle insert 22. On this sidethere is a suitable cursor 25 provided for the operation on thisparticular side as a slide-rule.

The interior corners of the sleeve 6 are formed angularly so as toprovide parallel sides 26 as guides for the respective flat stripinserts 21 in the respective spaces or compartments 19. The strip insertshown in FIG. 12, for instance, is provided with trigonometricalformulae.

In the form shown in FIGS. 14 to 18, the head 27 has a central elongatedpocket 28 and a separate tubular body 29 is anchored in the pocket 28and held therein in position. The cap 3 of this form is substantiallythe same as in the previous form except that it fits the adjacent end ofthe tubular body 29. This tubular body 29 also has the spring finger 8provided with a catch 11 to engage the latching aperture 12 in the cap 3as heretofore described. The writing implement illustrated in FIG. 19shows clearly the threaded neck 17 and the knurled head 18 which can bedetachably secured into the implement as heretofore described.

As illustrated in FIG. 20 this implement can be conveniently utilized asa writing implement. As shown in FIG. 21 when the writing implement orballpoint pen 13 is detached, then the edges of the multi-sided ortriangular implement can be utilized for drawing or ruling lines. Asillustrated in FIG. 22, the side of the implement with the insertbearing graduated scale, is utilized for measuring.

We claim:

l. A graph implement comprising,

a multi-sided tubular body,

a multi-sided head at one end of said body,

a tapered tip on said head,

a multi-sided transparent sleeve extended from said head,

a multi-sided cap at the other end of said body to hold said sleeve inposition,

said head and said cap and said sleeve being of larger circumferencethan the circumference of said tubular body thereby to form compartmentsbetween said tubular body and said transparent sleeve,

insert strips fitting into the respective compartments exposed to viewthrough the respective sides of said transparent sleeve,

means to detachably secure said cap to said body thereby to permit theinsertion of said strip inserts endwise into the respectivecompartments,

a writing implement insertable through said cap and said tubular bodyand said head in such position that the writing point of said writingimplement projects through and beyond said tip,

and means in the cap to secure the writing implement in the cap.

2. The graph implement specified in claim 1, and

said head, said sleeve and said cap being of substantially triangularcross-section, and means on said head and means on said cap to align therespective sides of said head, said sleeve and said cap to formcontiguous sides and contiguous edges respectively for the display ofsaid strip inserts through the respective sides of the sleeve and theuse of said edges for ruling,

and said strip inserts bearing inscriptions thereon exposed to viewthrough the respective sides of said transparent sleeve.

3. The graph implement specified in claim 2, and

the strip insert at least adjacent one side of said transparent sleevehaving a relatively slideable portion and having indicia of theslide-rule type,

the opposite ends of said one side of said sleeve being cut away topermit access to said slideable portion for manipulation,

the sides of said head and said cap having slots therein adjacent saidslideable portion to accommodate the said slideable portion,

and a cursor slideably held on the outside of said side of said sleevesuperimposed on said slide-rule type inserts.

4. The graph implement specified in claim 1, and

said head having a base, and said base having a recessed shoulder on itsouter periphery,

and one end of said sleeve fitting onto said recessed shoulder so as toregister the respective sides of said sleeve with the adjacent sides ofsaid head.

5. The graph implement specified in claim 1, and

said detachable securing means being a spring finger on the end of saidmulti-sided tubular body adjacent said cap,

and a lateral latch on the end of said spring finger,

said head having a pocket to receive the adjacent end of said tubularbody and said cap having a latching aperture at least in one of itssides for interlocking with said resiliently held latch.

6. The graph implement specified in claim 1, and

said multi-sided tubular body being anchored into the said multi-sidedhead at one end and being inserted into said multi-sided cap at itsother end,

and a spring latch element on the end of said multisided body insertableinto said cap,

said detachable securing means comprising releasably and yieldablyinterlocking elements in said cap and on the adjacent end of saidtubular body.

7. The graph implement specified in claim 1, and

said cap having a threaded hole therethrough in registry with saidtubular body,

said head having an aperture therethrough fitting the writing end ofsaid writing implement,

and said writing implement having a threaded neck engageable with saidthreaded hole in said cap, and spaced from the writing end of saidwriting implement substantially the same distance as the distancebetween the writing end of the passage of the tapered portion of saidhead and said threaded hole in said cap.

1. A graph implement comprising, a multi-sided tubular body, amulti-sided head at one end of said body, a tapered tip on said head, amulti-sided transparent sleeve extended from said head, a multi-sidedcap at the other end of said body to hold said sleeve in position, saidhead and said cap and said sleeve being of larger circumference than thecircumference of said tubular body thereby to form compartments betweensaid tubular body and said transparent sleeve, insert strips fittinginto the respective compartments exposed to view through the respectivesides of said transparent sleeve, means to detachably secure said cap tosaid body thereby to permit the insertion of said strip inserts endwiseinto the respective compartments, a writing implement insertable throughsaid cap and said tubular body and said head in such position that thewriting point of said writing implement projects through and beyond saidtip, and means in the cap to secure the writing implement in the cap. 2.The graph implement specified in claim 1, and said head, said sleeve andsaid cap being of substantially triangular cross-section, and means onsaid head and means on said cap to align the respective sides of saidhead, said sleeve and said cap to form contiguous sides and contiguousedges respectively for the display of said strip inserts through therespective sides of the sleeve and the use of said edges for ruling, andsaid strip inserts bearing inscriptions thereon exposed to view throughthe respective sides of said transparent sleeve.
 3. The graph implementspecified in claim 2, and the strip insert at least adjacent one side ofsaid transparent sleeve having a relatively slideable portion and havingindicia of the slide-rule type, the opposite ends of said one side ofsaid sleeve being cut away to permit access to said slideable portionfor manipulation, the sides of said head and said Cap having slotstherein adjacent said slideable portion to accommodate the saidslideable portion, and a cursor slideably held on the outside of saidside of said sleeve superimposed on said slide-rule type inserts.
 4. Thegraph implement specified in claim 1, and said head having a base, andsaid base having a recessed shoulder on its outer periphery, and one endof said sleeve fitting onto said recessed shoulder so as to register therespective sides of said sleeve with the adjacent sides of said head. 5.The graph implement specified in claim 1, and said detachable securingmeans being a spring finger on the end of said multi-sided tubular bodyadjacent said cap, and a lateral latch on the end of said spring finger,said head having a pocket to receive the adjacent end of said tubularbody and said cap having a latching aperture at least in one of itssides for interlocking with said resiliently held latch.
 6. The graphimplement specified in claim 1, and said multi-sided tubular body beinganchored into the said multi-sided head at one end and being insertedinto said multi-sided cap at its other end, and a spring latch elementon the end of said multi-sided body insertable into said cap, saiddetachable securing means comprising releasably and yieldablyinterlocking elements in said cap and on the adjacent end of saidtubular body.
 7. The graph implement specified in claim 1, and said caphaving a threaded hole therethrough in registry with said tubular body,said head having an aperture therethrough fitting the writing end ofsaid writing implement, and said writing implement having a threadedneck engageable with said threaded hole in said cap, and spaced from thewriting end of said writing implement substantially the same distance asthe distance between the writing end of the passage of the taperedportion of said head and said threaded hole in said cap.